<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .circle{
            width: 100px;
            height: 100px;
            border-radius: 50%;
            border:1px solid #0f0;
        }
        .trangel{
            width: 0;
				height: 0;
				border: 100px solid transparent;
				border-top-color: yellowgreen;
				border-bottom: none;
				border-left-color: transparent;
				border-right-color: transparent

        }
    </style>
</head>
<body>
    <div class="circle"></div>
    <div class="trangel"></div>
    <canvas id="box"></canvas>
</body>
<script>
var obj = {
    name: '张三',
    age: 12,
    sex: 1
}
// for(var i in obj){
//     if(obj[i]== 12){
//         continue // 跳过 本地
//     }
//     console.log(obj[i])
// }
for(var i in obj){
    if(obj[i]== 12){
        break // 终止
    }
    console.log(obj[i])
}
</script>
</html>